Good question. As the above answer states, it means that the landlord is unwilling to accept tenants that claim housing benifits. The way to counteract this is to get in contact with your local council, who will be able to provide you with a list of agencies, and private landlords, who would accept this.

Most people renting out property don't want DSS tenants. Unfortunately the scroungers in society who have children for free housing give others who are between jobs and usually pay their own way in society a bad name. There is a stigma attached to those who claim benefits and housing benefits, due to the minority who always claim benefits for one reason or another and never stand on their own two feet.

The problem is that it's assumed that all DSS are scroungers who don't take care of the property. In reality many on housing and other benefits are sick and/or disabled and unable to work but get painted with the same brush, it makes it very hard for disabled people to find somewhere to live.